Add package version property

[camposandro]

Adds the __version__ property to show the installed package version. Closes #347.

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Code Quality

• I have read the Contribution Guide and LINCC Frameworks Code of Conduct
• My code follows the code style of this project
• My code builds (or compiles) cleanly without any errors or warnings
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.72%. Comparing base (8dd8310) to head (dff7299).
Report is 52 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #371   +/-   ##
=======================================
  Coverage   99.72%   99.72%           
=======================================
  Files          26       26           
  Lines        1460     1461    +1     
=======================================
+ Hits         1456     1457    +1     
  Misses          4        4           

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[delucchi-cmu]

Is that seriously all it took?